Dr. Ben Wedro practices emergency medicine at Gundersen Clinic, a regional trauma center in La Crosse, Wisconsin. His background includes undergraduate and medical studies at the University of Alberta, a Family Practice internship at Queen's University in Kingston, Ontario and residency training in Emergency Medicine at the University of Oklahoma Health Sciences Center.
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Author: Betty Kovacs, MS, RD
Medical Editor: William C. Shiel Jr., MD, FACP, FACR
Viewer Question: My cholesterol is 210. A couple years ago, I stopped eating meat in
an attempt to lower my cholesterol, but that hasn't helped much. Are
there any foods that will lower my cholesterol?
Expert's Response: It's great that you tried to change your diet to help lower your cholesterol. While cutting back on red meat can help, there are many other foods that you can cut back on or remove from your diet that will have an even greater impact on your cholesterol.
For anyone with high cholesterol, or more importantly a high LDL, the three things to limit are trans fats, saturated fats and cholesterol. Of these three the most important one to limit, or completely omit, is the trans fats. The sources of trans fats are: commercial baked goods (cake, cookies, crackers, donuts), vegetable shortening, fried foods, some margarines, and anything made with partially hydrogenated oil. The label will tell you if there are any grams of trans fat in the product, but the best thing to do is read the list of ingredients and look for any oil that is hydrogenated. The next thing to cut back on would be foods with high amounts of saturated fat. The sources of saturated fats are:...
High cholesterol is also referred to as hypercholesterolemia (hyper=high +
cholesterol + emia = in the blood) or hyperlipidemia
Cholesterol is a fatty substance that is an important part of the outer
lining of cells in the body of animals.
Cholesterol is also found in the blood circulation of humans.
Cholesterol in the blood originates from dietary intake and liver
production.
Dietary cholesterol comes primarily from animal sources including meat,
poultry, fish, and dairy products.
Organ meats such as liver, are especially high in cholesterol content.
LDL (low density lipoprotein) cholesterol is called "bad" cholesterol,
because elevated levels of LDL cholesterol are associated with an increased risk
of coronary heart disease.
HDL (high density lipoprotein) cholesterol is called the "good cholesterol"
because HDL cholesterol particles prevent atherosclerosis by extracting
cholesterol from artery walls and disposing of them through liver metabolism.
High levels of LDL cholesterol and low levels of HDL cholesterol are risk
factors for atherosclerosis.
Research has shown that lowering LDL cholesterol reduces the risk of heart
attacks, strokes, and peripheral artery disease.
The National Institute of Health, the American Heart Association and the
American College of Cardiology publish guidelines to help physicians and
patients with this risk reduction for heart attack and stroke.
Factors that affect blood cholesterol levels include
diet, body weight,
exercise, age and gender, diabetes, heredity, and other causes including
underlying medical conditions.
Guidelines recommend that cholesterol screening occur every 5 years after
age 20. Should elevated cholesterol levels be found, testing may need to occur
more frequently.
Health care practitioners and the National Institute of Health recommend
that a person's cholesterol level stay below 200.
Cholesterol levels 200-239 are considered borderline high.
Cholesterol levels 240 or greater are considered high.
Drugs to lower blood cholesterol levels are most effective when combined
with a low cholesterol diet.
What is cholesterol?
Cholesterol is a chemical compound that is naturally produced by the body and is
structurally a combination of lipid (fat) and steroid. Cholesterol is a building block for cell membranes and for hormones like estrogen and testosterone. About 80% of the body's cholesterol is produced by the liver, while the rest comes from our diet.
The main sources of dietary cholesterol are meat, poultry, fish, and dairy products. Organ meats, such as liver, are especially high in cholesterol content, while foods of plant origin contain no cholesterol.
After a meal, dietary cholesterol is absorbed from the intestine and stored in the liver. The liver is able to regulate cholesterol levels in the blood stream and can secrete cholesterol if it is needed by the body.
What are LDL and HDL cholesterol?
LDL cholesterol is called "bad" cholesterol, because elevated levels of LDL
cholesterol are associated with an increased risk of
coronary heart disease,
stroke, and
peripheral artery disease. LDL lipoprotein
deposits cholesterol along the inside of artery walls, causing the formation of a hard, thick
substance called cholesterol plaque. Over time, cholesterol plaque causes
thickening of the artery walls and narrowing of the arteries, a process
called atherosclerosis, which decreases blood flow through the narrowed area.
HDL cholesterol is called the "good cholesterol" because HDL cholesterol
particles prevent atherosclerosis by extracting cholesterol from the artery
walls and disposing of them through the liver. Thus, high levels of LDL
cholesterol and low levels of HDL cholesterol (high LDL/HDL ratios) are risk
factors for atherosclerosis, while low levels of LDL cholesterol and high levels
of HDL cholesterol (low LDL/HDL ratios) are desirable and protect against heart
disease and stroke.
Total cholesterol is the sum of LDL (low density) cholesterol, HDL (high
density) cholesterol, VLDL (very low density) cholesterol, and IDL (intermediate
density) cholesterol.
Blood clots can occur in the venous and arterial vascular system. Blood clots can form in the heart, legs, arteries, veins, bladder, urinary tract and uterus. Risk factors for blood clots include high blood pressure and cholesterol, diabetes, smoking, and family history. Symptoms of a blood clot depend on the location of the clot. Some blood clots are a medical emergency. Blood clots are treated depending upon the cause of the clot. Blood clots can be prevented by lowering the risk factors for developing blood clots.
Hypothyroidism is any state in which thyroid hormone production is below normal. Normally, the
rate of thyroid hormone production is controlled by the brain at the pituitary.
Hypothyroidism is a very common condition and the symptoms of hypothyroidism are
often subtle.
Liver cancer is the fifth most common cancer in the world and the majority of patients with liver cancer will die within one year as a result. Patients with associated cirrhosis caused by chronic hepatitis B or C infections, alcohol, and hemochromatosis are at the greatest risk of developing liver cancer. Many patients with liver cancer do not develop symptoms until the advanced stages of the tumor which usually makes prognosis poor. The combination of an imaging study (ultrasound, CT, or MRI scans) and an elevated blood level of alpha-fetoprotein will most effectively diagnose liver cancer, while a liver biopsy can make a definitive diagnosis. Medical treatments, including chemotherapy, chemoembolization, ablation, and proton beam therapy, are not very effective. Surgical removal of the tumor or a liver transplant may be most effective in certain cases.
Diabetes mellitus is a chronic condition characterized by high levels of sugar (glucose) in the blood. The two types of diabetes are referred to as type 1 (insulin dependent) and type 2 (non-insulin dependent). Symptoms of diabetes include increased urine output, thirst, hunger, and fatigue. Treatment of diabetes depends on the type.
Liver disease can be cause by a variety of things including infection (hepatitis), diseases such as gallstones, high cholesterol or triglycerides, blood flow obstruction to the liver, and toxins (medications and chemicals). Symptoms of liver disease depends upon the cause; however, common symptoms may include nausea, vomiting, upper right abdominal pain, and jaundice. Treatment depends upon the cause of the liver disease.
Angina is chest pain that is due to an inadequate supply of oxygen to the heart muscle.
Angina can be caused by coronary artery disease or spasm of the coronary
arteries. EKG, exercise treadmill, stress echocardiography, stress thallium, and cardiac
catheterization are important tests used in the diagnosis of angina.
Heart attack happens when a blood clot completely obstructs a coronary
artery supplying blood to the heart muscle. A heart attack can cause chest pain, heart failure, and electrical
instability of the heart.
Dementia is a significant loss of intellectual abilities such as memory capacity, severe enough to interfere with social or occupational functioning. There are different criteria classification schemes for dementias such as cortical, subcortical, progressive, primary, and secondary dementias. Other conditions and medication reactions can also cause dementia. Dementia is diagnosed based on a certain set of criteria. Treatment for dementia is generally focused on the symptoms of the disease.
Abdominal aortic aneurysm is a ballooning or widening of the main artery (the aorta) as it courses down through the abdomen. The most common cause of aortic aneurysms is
"hardening of the arteries" called arteriosclerosis.
Impotence, also known as erectile dysfunction, is a common
problem among men characterized by the consistent inability to sustain an
erection sufficient for sexual intercourse or the inability to achieve
ejaculation, or both. Impotence can have emotional causes but most often it is
due to a physical problem.
Cushing's syndrome, sometimes referred to as hypercortisolism, is a hormonal disorder caused by prolonged exposure to high levels of the hormone cortisol. Symptoms may include obesity, thinning arms and legs, a rounded face, and increased fat around the neck. Some causes of Cushing's syndrome is from taking glucocorticoid hormones such as prednisone for inflammatory diseases. Treatment for Cushing's syndrome depends on the cause.
Rhabdomyolysis is a rapid deterioration and destruction of skeletal muscle. Some of the causes of rhabdomyolysis include severe burns, muscle trauma, coma, seizures, electrolyte imbalance, medications (statins), viruses, bacteria. Treatment of rhabdomyolysis depends on the cause.
Insulin resistance is the diminished ability of cells to respond to the action of insulin in transporting glucose (sugar) from the bloodstream into muscle and other tissues. Causes of insulin can include conditions such as stress, obesity, metabolic syndrome, and steroid use. Some of the risk factors for insulin resistance include fatty liver, heart disease, strokes, peripheral vascular disease, high cholesterol, and smoking. Treatment for insulin resistance are lifestyle changes and if necessary, medication.
The main features of metabolic syndrome include insulin resistance, hypertension (high blood pressure), cholesterol abnormalities, and an increased risk for clotting. Patients are most often overweight or obese. Lifestyle modification such as the Mediterranean diet, exercise, and quitting smoking are the preferred treatment of metabolic syndrome.
Heart disease (coronary artery disease) is caused by a buildup of cholesterol deposits in the coronary arteries. Risk factors for heart disease include smoking, high blood pressure, heredity, diabetes, peripheral artery disease, and obesity. Symptoms include chest pain and shortness of breath. There are a variety of tests used to diagnose coronary artery disease. Treatment includes life-style changes, medications, procedures, or surgery.
Obesity is the state of being well above one's normal weight. A person has traditionally been
considered to be obese if they are more than 20 percent over their ideal weight.
That ideal weight must take into account the person's height, age, sex, and
build.
When a portion of the brain loses blood supply, through a blood clot or embolus, a transient ischemic attack (TIA, mini-stroke) may occur. If the symptoms do not resolve, a stroke most likely has occurred. Symptoms of TIA include: confusion, weakness, lethargy, and loss of function to one side of the body. Risk factors for TIA include vascular disease, smoking, high blood pressure, high cholesterol, and diabetes. Treatment depends upon the severity of the TIA, and whether it resolves.
Renal artery stenosis is a narrowing of the diameter of the renal arteries. When the renal arteries narrow, the result is restricted blood flow to the kidneys, which may lead to impaired kidney function and high blood pressure (referred to as renovascular hypertension (RVHT). Renal artery stenosis can occur in one or both kidneys. The primary cause of renal artery stenosis is atherosclerosis. Risk factors for renal artery stenosis include high blood pressure, high cholesterol levels, age, cigarette smoking, and diabetes. Symptoms of renal artery stenosis include high blood pressure that does not respond to treatment, severe high blood pressure in individuals younger than 30 or greater than 50 years of age. Renal artery stenosis is diagnosed with imaging and functional tests. Treatment for renal artery stenosis include medication or surgery.
Cholesterol is the most common type of steroid in the body. The treatment of elevated cholesterol involves not only diet but also weight loss, regular exercise, and medications. By understanding your cholesterol profile you can better manage your cholesterol levels.
Iron is a mineral our bodies need. Iron deficiency is a condition resulting from not enough iron in the body. It is the most common nutritional deficiency and the leading cause in the US. Iron deficiency is caused due to increased iron deficiency from diseases, nutritional deficiency, or blood loss and the body's inability to intake or absorb iron. Children, teen girls, pregnant women, and babies are at most risk for developing iron deficiency. Symptoms of iron deficiency include feeling weak and tired, decreased work or school performance, slow social development, difficulty maintaining body temperature, decreased immune function, and an inflamed tongue. Blood tests can confirm an iron deficiency in an individual. Treatment depends on the cause of the deficiency. Proper diet that includes recommended daily allowances of iron may prevent some cases of iron deficiency.
Characteristics of binge eating disorder include eating more quickly than usual, eating until uncomfortably full, eating a lot of food despite not being hungry, eating alone due to embarrassment, and feeling disgusted by overeating. Depression may be a cause of binge eating disorder. Risks of binge eating include weight gain, diabetes, high blood pressure, high cholesterol, heart disease, and some cancers.
Heart disease, particularly coronary artery disease is the leading cause of heart attacks. Women are more likely to die from a heart attack than men. High cholesterol, high blood pressure, obesity, and high triglycerides are contributors to heart disease. Some of the common symptoms of a heart attack in women include chest pain, shortness of breath, nausea, feeling faint or woozy, and more. Heart disease can be prevented by lifestyle changes and controlling high blood pressure, cholesterol, weight, and diseases such as diabetes.
Heart attacks are the major causes of unexpected, sudden death among men and women. A heart attack is also a significant cause of heart failure. Learn the risk factors for heart attack such as high blood pressure, diabetes, and other heart conditions. Lowering your risk factor, lifestyle changes, and in some cases medication are the most effective way of preventing a heart attack.
A heart attack is a layperson's term for a sudden blockage of a coronary artery. This photo essay inlcudes graphics, pictures, and illustrations of diseased heart tissue and the mechanisms that lead to coronary artery disease, and possible heart attack.
eye. Read about symptoms, signs, diagnosis, treatment, and prognosis.
Coats' disease is a rare eye condition that typically progresses to vision loss or blindness in one eye. Gradual vision loss is usually the first symptom, followed by a cloudy white or yellow pupil due to the presence of a cataract. Treatment focuses on limiting the blood vessel progression and may involve cryotherapy or laser photocoagulation.
Fast food consumption and lack of exercise are just a couple of causes of childhood obesity. Health effects of childhood obesity include type 2 diabetes, heart attack, stroke, high cholesterol, asthma, sleep apnea, gallstones, fatty liver disease, GERD, depression, and eating disorders.
Vitamins and exercise can lower your risk for heart attack and heart disease. Folic acid, vitamins, and homocysteine levels are interconnected and affect your risk for heart disease or heart attack. Antioxidants and exercise also play a key role in heart attack and heart disease prevention. Lower your risk factors for heart disease and heart attack by lowering cholesterol, lowering blood pressure, diabetes prevention, and smoking cesssation.
Disease prevention in men includes routine screening tests that are part of basic prevention medicine. Take an active role in your own health care and discuss screening tests with your doctor early in life. Age of screening and timing of screening depends upon the condition being assessed.
Disease prevention in women includes screening tests that are a basic part of prevention medicine. All screening tests
are commonly available through your general doctor. Some specialized tests may be available elsewhere.
Insulin is a hormone that is produced by the beta cells, which are cells that
are scattered throughout the pancreas. The insulin produced is
released into the blood stream and travels throughout the body. Insulin is an
important hormone that has many actions within the body. Most of the actions of
insulin are directed at metabolism (control) of carbohydrates (sugars and starches), lipids (fats), and proteins. Insulin also is important in regulating the cells of the
body including their growth.
Insulin resistance (IR) is a condition in which the
cells of the body become resistant to the effects of insulin, that is, the
normal response to a given amount of insulin is reduced. As a result, higher
levels of insulin are needed in order for insulin to have its effects. The
resistance is seen with both the body's own insulin (endogenous) and if insulin
is given through injection (exogenous).